johnson



March 17, 1925. 1,530,269

A. A. JOHNSQN TYPEWRITING MACHINE Filed may 5, 1921 Patented Mar. 17, 1925.

UNITED STATES PATENT OFFICE.

ARTHUR A. JOHNSON, OF WASIIIEIGION, Dlt-STRICT OF COLUMBIA, ASSIGNOR TC)l UN- DERWOOD TYPEWRITCERVGOM?ANY, Oli? NEW 'ETOlitL N. Y., A. CORPORATION OF DELAWARE.

TYPEWRITXNG MEACHENE.

Application filed May 5,

writing and more particularly to improved means and lmethods :tor handling the webs or web and the manitolding material in con tinuous billing and like worlr.l

At present there is 'on the market what is known as the Underwood Fan-'told Biller, in which the platen o'l the machine is so mounted as to swing upwardly and 't'orwardly to permit the course ot' the webs to be straightened suiiciently to enable or peri mit the carriage, on which the carbon sheets are mounted, to be moved rearwardly to move the carbon sheets to position to cooperate with the next torm. This movement et the carbon sheets and the platen takes place after a form has been completed. After the carbon sheets are retracted the platen is returned to normal position and the written yform is severed trom the unwritten form.

Now, according to this invent-ion, 'tan-told or other work sheets can be provided in continuous lengths and can be written upon and handled in an ordinary typewriting machine of commerce without necessitating any alterations in theexisting structures and with a -few additional parts, although the latter are not in all cases essential.

My new method consists in introducing to the platen of the machine the web or webs with the interleaved carbon sheets; then typewriting upon the web or webs; then removing entirely from the machine the work and the carbon sheets; then causing a bodily displacement 'et the carbon sheets relative to the work to move the carbon sheets and` work into proper superposed positions with the form adjacent the written form; and then reinserting the work and carbon, sheets and moving the salme to writing position. Preferably, the carbon sheets are held against movement while the webs are advanced .one ferm length.

According to this invention the Car-loon 'sheets are secured to a holder so that they are interleaved. with the folds of the web, or

1921.l Serial No. 466,944.

the separate sheets ii such are used; and this carbon sheet holder is mounted upon the usual paper table or other suit-able part of the typewriter carriage, the holder traveling with but being` non-traveling with respect to the carriage. This is in contra-distinction to the usual arrangement in which the car bon holder is moved to travel on the typewriter carriage or its extension in a direction parallel with the length of the work sheet or sheets. Said usual carbon holder travels rearwardly when adjusting the carbons to the new form and forwardly, lineby-line as the writing operation progresses. ln the operation of the present invention there is sulheient slackor in other Words, the carbon sheets are oit sufficient length-to enable the work to extend in a loop when the work is introduced to the platen and brought to the writing line, that a forni can be written to the last line without entirely straightening the loop and therefore without causing the carbon sheets to. tend to move the carbon holder.

Other features and advantages will herematter appear.

In the accompanying drawings,

Figure 1 is a perspective view of the carriage portion of an Underwood typewriting machine, showing my invention as applied thereto. y

Figure 2 is a side elevation of the same.

Figure 3 is a similar side elevation, showing the web removed from the platen and being moved forwardly to reposition the saine with regard to the carbon-sheets.

As shown in the drawings, the rotary platen of an Underwood typewriting machine is provided with an axle 11 mounted in the carriage frame 12. guides the work between the platen 10 and forwardly and rearwardly disposed ,feedrolls 14 and l5, respectively@ the front of the platen to receive type impressions "from the type 16a.

y Thefeed-rolls ir and 15 are supported bv arms 16 pivoted upon a rod 17, and each provided with a depending arm 1S, the arms 18 being oppositely disposed for receiving therebetween flat portions 19 of a rod 2Q rotatably mounted in. the carriage frame The rod 20 may be Controlled by suitable means, not Shown, compri, n's-an arm llavng link connection with a feed-roll release A paper table 1 3 work-sheets.

. ferred to the under sheets of the work. 'holders or arms 25, to which the carbonlever. Suitable springs, not shown, normally tend to hold thefeed-rolls in contact with the platen or the work carried thereby, so that the latter `feeds with the rotation of the platen. Vhen the release key is depressed, the arms 18 are spread apart, causing the feed-rolls to be moved out of engagement with the platen or the work carried thereby. llVhen this is done, the work canbe freely introduced or removed from the platen without rotation of the platen.

It will be understood that the mechanism abovel described is that of the ordinary commercial Underwood standard typewriter.

According to the present invention, there is mounted upon the typewriter carriage, preferably in close proximity to the paper table 13, a Carbon-holder Sel, which comprises holders or arms 25, each secured at one end to the holder, so that its free end may entend into a fold of a fan-fold web 26 or between separate webs constituting the The arms 25 are adapted to hold sheets of manifolding material, snch as carbon-sheets 27, the latter lying within the folds of the fan-fold web or between the plies of separate sheets forming the workpieces, so that the type impressions are trans- The sheetsmay be attached in any suitable inanner, are supported in slotted blocks 2l at opposite ends of a plate 241, which curves downwardly at its rear et ge to facilitate the feeding of the fan-fold web 2G thereover, and is supported by snitalfile means, such as a sheet-metal bracket 22. The arms 25 are recessed, as shown at the rig-ht in Figure 2. to obtain a better @mwN-tion with `the bloclis2l, and said arms are held in position in said blocks 2l by means of screws 23. As shown at the right of Figure 2, each arm has at one edge a tongne-aml groove connection with one of the blocks 2l.

After the work is properly interleaved with the carbon-sheets 27 and their holders 25, the entire assemblage of windt-sheets and carbon-sheets is introduced to the platen, preferably while the feed-rolls are released,

`and are thence guided to the line of writing by suitable guides 28, which guide the vweb beneath a knife 29, hereinafter referred to.

.The carbon-sheets are of sufficient length to `cession of Sections or forni@ possible over-run, and to 'facilitate thc withdrawal of the web, as will presently be described.

After the form has been written upon, the web is, according to the present invention, withdrawn from the machine either by retrograde movement of the platen or by releasing the feed-rolls ll and l5, hy the operation of the release hey. .lfhe web and carbons, being free from the platen, can then be relatii'iely displaced longitudinally of the web. This done, according to the preferred embodiment of this invention, by pulling the web forwardly while` the carbon-sheets are held by the fixed holder 34. The extent of the for "ard, movement of the web is equal to a forni length, and this may be determined by special gages, if desired. flut, in practice, I have found that the operative can accomplish the proper movement ot' the web without the aid of gages, for instance, by oh serving the position of the web relative to the carbon-sheets through the more or less transpicuous web.

The web having been advanced so that the carbon-sheets are no longer interleaved with the written portion of the web, the entire web, including the written portion. is reintroduced to the platen and advanced until the bottom of the written form is adjacent the knife 29. The feeifl-rolls are then caused to re-engage the web, and the written form is torn from thi` unwritten form along the edge of the knife 29.

The next .forni with which the carbon sheets has been interleaved is then written upon, and the operations repeated.

It will be observed that (here is provided a set of inking loops having the 'torni of carbon-sheets 27 and co-ope ating with the types and platen, cach loop comprising (l) a slack tab portion attached at its rear end to the stationary holder 25 and o I siniicient length to reach when taut from .said stationary holder to the printing line, and a line-feeding portion extending in Slack condition from said tab portion to the front of the platen, Figure l, and of extended length permitting it to feed lino by line up around the platen and receive many separated lines of type impressions. thereon while the slack remains, and releasable means lat, l5 pressing upon the fecding side of the platen and co-operatively therewith line-feeding said slaehY inlzinr! loops, together with inter-leaved plies ol slack work-web (usually divided into a sucnnlil the tab portions of said inhing loops are nearly tautened by said line-feeding inovenicnts while remaining attached to said stationary holder; said holder arranged at a, distance from the plat-en affording room for the ink' ing loops and interleaved work-plies to asprisin a base-plate, a slotted block at each end o vsaid plate, superposed carbon-carrying arms extending alternately from said blocks and supported in the slots therein which are arranged alternately at different heights, means for holding said carbonearrying arms in position, and means for supportino said base-plate.

6. An attachment for use with i typewriting machine having a cylindrical platen and a fra-me therefor, comprising a rear papertable to enable the machine to be used as a fan-fold machine, said attachment comprising a base-plate to overlie the upper edge ot the rear paper-table, supports extending upwardly from opposite ends of said plate, superposed carbon-carrying arms extending alternately from said supports, and a bracket for supporting said base-plate on v said platen-frame.

7. A typewriting machine of the character set forth, includingT a revoluble linespacing platen, means arranged at the intake side oi'l the platen capable of supporting superposed plies of web in slack condition, and means stationary at the line-feeding operation for detaining by their ends one or more carbon-sheets interleaved between the work-web plies and forming therewith a composite web, whereby the slack in the composite web is taken up by the line-feeding of the platen.

8. A typewriting machine of the character set forth, including a revoluble linespacing platen, means arranged at the intake side ot the platen capable ot supporting superposed plies of web in slack condition, and means stationary at the line-feeding opf eration for detaining' by their ends one or more carbon-sheets interleaved between the Work-Web plies and forming therewith a compo/site web, whereby the slack in the composite web is taken up by the line-feeding of the platen, said supporting means including means to permit the web to be in a loop between the platen and carriage.

9. A type-writing machine of the character set forth, including a revoluble line-spacing platen, a carriage on which said platen is mounted, a frame extending backwardly from said typewriter carriage and connected thereto to travel therewith, said frame having at its rear a web-guide or support, and means stationary at the line-feeding operation for detaining by their ends one or more carbon-sheets interleaved between the workweb plies and forming therewith a composite web, whereby the slack in the con'iposite web is taken up by the line-feeding1r ot the platen, the loop or slack portion of the composite web extending forwardly between said rear web-guide and the platen.

l0. A typewriting machine of the character set forth, including a revoluble line-spacing platen, a carriage on which said platen is mounted, a frame extending backnuirdly from said typewriter carriage and connected thereto to travel therewith, said frame having at its rear a web-guide or support, and means stationary at the line-feeding operaw tion for detaining by their ends one or more carbon-sheets interleaved between the workweb plies and forming therewith a composite web, whereby the slack in the composite web is taken up by the line-teethingr o' the platen, the loop or slack portion of the composite web extending for ardly between said rear web-guide and the platen, said carriage having a paper-shelf in rear of the platen, and the loop of web occurring between said paper-shelf and said rear web-guide or support.

ARTHUR A. JOHNSON. lVitnesses GEORGE F. Hann, C. H. FRASEN. 

